Java Code Examples for org.apache.hadoop.hdfs.MiniDFSCluster#corruptBlockOnDataNodesByDeletingBlockFile()

The following examples show how to use org.apache.hadoop.hdfs.MiniDFSCluster#corruptBlockOnDataNodesByDeletingBlockFile() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestMover.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Test
public void testMoverFailedRetry() throws Exception {
  // HDFS-8147
  final Configuration conf = new HdfsConfiguration();
  conf.set(DFSConfigKeys.DFS_MOVER_RETRY_MAX_ATTEMPTS_KEY, "2");
  final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
      .numDataNodes(3)
      .storageTypes(
          new StorageType[][] {{StorageType.DISK, StorageType.ARCHIVE},
              {StorageType.DISK, StorageType.ARCHIVE},
              {StorageType.DISK, StorageType.ARCHIVE}}).build();
  try {
    cluster.waitActive();
    final DistributedFileSystem dfs = cluster.getFileSystem();
    final String file = "/testMoverFailedRetry";
    // write to DISK
    final FSDataOutputStream out = dfs.create(new Path(file), (short) 2);
    out.writeChars("testMoverFailedRetry");
    out.close();

    // Delete block file so, block move will fail with FileNotFoundException
    LocatedBlock lb = dfs.getClient().getLocatedBlocks(file, 0).get(0);
    cluster.corruptBlockOnDataNodesByDeletingBlockFile(lb.getBlock());
    // move to ARCHIVE
    dfs.setStoragePolicy(new Path(file), "COLD");
    int rc = ToolRunner.run(conf, new Mover.Cli(),
        new String[] {"-p", file.toString()});
    Assert.assertEquals("Movement should fail after some retry",
        ExitStatus.IO_EXCEPTION.getExitCode(), rc);
  } finally {
    cluster.shutdown();
  }
}
Example 2
Source File: TestMover.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Test
public void testMoverFailedRetry() throws Exception {
  // HDFS-8147
  final Configuration conf = new HdfsConfiguration();
  conf.set(DFSConfigKeys.DFS_MOVER_RETRY_MAX_ATTEMPTS_KEY, "2");
  final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
      .numDataNodes(3)
      .storageTypes(
          new StorageType[][] {{StorageType.DISK, StorageType.ARCHIVE},
              {StorageType.DISK, StorageType.ARCHIVE},
              {StorageType.DISK, StorageType.ARCHIVE}}).build();
  try {
    cluster.waitActive();
    final DistributedFileSystem dfs = cluster.getFileSystem();
    final String file = "/testMoverFailedRetry";
    // write to DISK
    final FSDataOutputStream out = dfs.create(new Path(file), (short) 2);
    out.writeChars("testMoverFailedRetry");
    out.close();

    // Delete block file so, block move will fail with FileNotFoundException
    LocatedBlock lb = dfs.getClient().getLocatedBlocks(file, 0).get(0);
    cluster.corruptBlockOnDataNodesByDeletingBlockFile(lb.getBlock());
    // move to ARCHIVE
    dfs.setStoragePolicy(new Path(file), "COLD");
    int rc = ToolRunner.run(conf, new Mover.Cli(),
        new String[] {"-p", file.toString()});
    Assert.assertEquals("Movement should fail after some retry",
        ExitStatus.IO_EXCEPTION.getExitCode(), rc);
  } finally {
    cluster.shutdown();
  }
}